Restructuring Charges - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Accrued Restructuring Costs
Restructuring charges	$ 0	$ 33	$ 0	$ 85
NextGen Program
Accrued Restructuring Costs
Restructuring charges		33		85
Employee Severance
Accrued Restructuring Costs
Restructuring charges			$ 0	55
Employee Severance \| NextGen Program
Accrued Restructuring Costs
Restructuring charges		29		55
Facility exit costs \| NextGen Program
Accrued Restructuring Costs
Restructuring charges		$ 4		29
Third party and other costs \| NextGen Program
Accrued Restructuring Costs
Restructuring charges				$ 1

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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COGNIZANT TECHNOLOGY SOLUTIONS CORP 10-Q